Concatemers of differentially expressed multiple genes
First Claim
1. A nucleotide concatemer comprising a cassette of nucleotide sequence of the general formula in the 5′
- →
3′
direction;
[rs2-SP-PR-X-TR-SP-rs1]n whereinrs1 and rs2 together comprise a rare restriction site, denoted rs1-rs2, comprising arecognition sequence of 7 to 30 non-N bases,each SP individually denotes a spacer of at least two nucleotide bases,PR denotes a promoter, capable of functioning in a cell,X denotes an expressible nucleotide sequence,TR denotes a terminator, andn≧
25, andwherein at least a first cassette is different from a second cassette.
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Abstract
In the present invention are disclosed concatemers of concatenated expression cassettes and vectors that enable the synthesis of such concatemers. The concatemer comprises in the 5′→3′ direction a cassette of nucleotide sequence of the general formula [rs2-SP-PR-X-TR-SP-rs1]n wherein rs1 and rs2 together denote a functional restriction site, SP individually denotes a spacer of at least two nucleotide bases, PR denotes a promoter, capable of functioning in a cell, X denotes an expressible nucleotide sequence, TR denotes a terminator, and SP individually denotes a spacer of at least two nucleotide bases, and n>/=2, and wherein at least a first cassette is different from a second cassette. The main purpose of these concatemers is the controllable and co-ordinated expression of large numbers of heterologous genes in a single host. Furthermore, the invention relates to a concatemer of cassettes of nucleotide sequences and a method for preparing the concatemers. In a further aspect, the invention relates to transgenic host cells comprising at least one concatemer according to the invention, as well as to a method for preparing the transgenic host cells. Finally, the invention relates to a vector comprising a cassette of nucleotides, a method for preparing said vector, a nucleotide library comprising at least two primary vectors each comprising a cassette of nucleotides, a method for preparing the library.
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Citations
24 Claims
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1. A nucleotide concatemer comprising a cassette of nucleotide sequence of the general formula in the 5′
- →
3′
direction;
[rs2-SP-PR-X-TR-SP-rs1]nwherein rs1 and rs2 together comprise a rare restriction site, denoted rs1-rs2, comprising a recognition sequence of 7 to 30 non-N bases, each SP individually denotes a spacer of at least two nucleotide bases, PR denotes a promoter, capable of functioning in a cell, X denotes an expressible nucleotide sequence, TR denotes a terminator, and n≧
25, andwherein at least a first cassette is different from a second cassette. - View Dependent Claims (2, 3, 9, 10, 11, 12, 13, 14, 15, 16, 21, 22)
- →
-
4. A cell comprising at least one concatemer of individual oligonucleotide cassettes, each concatemer comprising an oligonucleotide of the following formula in 5′
- →
3′
direction;
[rs2-SP-PR-X-TR-SP-rs1]nwherein rs1 and rs2 together comprise a rare restriction site, denoted rs1-rs2, comprising a recognition sequence of 7 to 30 non-N bases, each SP individually denotes a spacer of at least two nucleotide bases, PR denotes a promoter, capable of functioning in the cell, X denotes an expressible nucleotide sequence, TR denotes a terminator, and wherein n≧
25, andwherein at least two expressible nucleotide sequences are from different expression states. - View Dependent Claims (6, 7, 8, 17, 18, 23, 24)
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5. A cell comprising at least one concatemer of individual oligonucleotide cassettes, each concatemer comprising an oligonucleotide of the following formula in 5′
- →
3′
direction;
[rs2-SP-PR-X-TR-SP-rs1]nwherein rs1 and rs2 together comprise a rare restriction site, denoted rs1-rs2, comprising a recognition sequence of 7 to 30 non-N bases, each SP individually denotes a spacer of at least two nucleotide bases, PR denotes a promoter, capable of functioning in the cell, X denotes an expressible nucleotide sequence, TR denotes a terminator, and wherein n≧
25, andwherein rs1-rs2 in at least two cassettes is recognised by the same restriction enzyme. - View Dependent Claims (19, 20)
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Specification